But there is one Kardashian fan in particular who appreciates her curves the most. Rapper West, 35, who has been dating Kardashian since March, tweeted a photo of his girlfriend behind her back Friday.

"Mercy," he wrote as the caption for a pic of Kardashian walking away from the camera after getting out his Lamborghini. Wearing a backless curve-hugging white dress, the star's famous booty is on full display in the photo.